package variabledemo1;

public class variabledemo1 {
    //程序主入口
    public static void main(String[] args) {
        //定义变量
        //数据类型 变量名 = 数值;
        //int  double
        int a = 10;
        System.out.println(a);

        int b = 10;
        int c = 20;
        System.out.println(b + c);

        int d = 100, e = 100, f = 300;
        System.out.println(d + e + f);

    }
}
